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प्रश्न
Write the name of the product when ketones react with 1,2-diol in presence of dry HCl.
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उत्तर
The product obtained when ketones react with 1,2-diol in presence of dry HCl is known as cyclic ketal.
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संबंधित प्रश्न
Answer in brief.
Observe the following equation of reaction of Tollens' reagent with aldehyde. How do we know that a redox reaction has taken place? Explain.
\[\ce{R-CHO + 2Ag(NH_{3})^{+}_{2} + OH^{-}->[\triangle] R-CO{O}^{-} + 2Ag↓ + 4NH3 + 2H2O}\]
Write reaction showing aldol condensation of cyclohexanone.
Answer in brief.
Write reaction showing conversion of Acetaldehyde into acetaldehyde dimethyl acetal.
_____________ reaction is used to synthesize straight alkyl substituted benzenes.
Write reactions for the action of the following reagents on p-chlorobenzaldehyde.
Phenyl hydrazine
Ethyl methyl ketone can be reduced to n-butane by which of the following reactions?
Fehling solution is ____________.
Acetone on Clemmensen reduction gives ____________.
Which of the following is Clemmensen reduction?
\[\ce{Benzoic acid ->[i) NH3][ii) \Delta] A ->[NaOBr] B ->[NaNO2/HCl] C}\] ‘C’ is:
In which case, chiral carbon is not generated by reaction with HCN.
Which one of the following reaction is an example of disproportionation reaction.
Carboxylic acids have higher boiling points than aldehydes, ketones and even alcohols of comparable molecular mass. It is due to their ____________.
How will you convert benzaldehyde into the following compound?
Benzoic acid
Complete the following reaction.
\[\begin{array}{cc}
\ce{CH3 - CH2 - CH2 - C - CH3 ->[HO - CH2 - CH2 - CH2 - OH][dry HCl] ?}\\
||\phantom{.........}\\
\ce{O}\phantom{.........}
\end{array}\]
How will you prepare acetaldehyde from ethyne?
How acetone is converted into propane.
Which of the following compound will show a positive silver mirror test?
The reagent used in Wolf - Kishner reduction is ______.
Which of the following reaction does not involve either oxidation or reduction?
Which of the following compounds does not undergo a haloform reaction?
How are the following compound obtained from alkyne?
Acetaldehyde
How are the following compound obtained from alkyne?
Acetone
Write a note on Clemmensen reduction.
Write the structure of the products obtained from the following ketones by action of hydrazine in presence of strong base KOH.
Identify B in the following reaction:
\[\begin{array}{cc}
\ce{O}\phantom{........}\\
||\phantom{........}\\
\ce{\underset{(Acetone)}{CH3 - C - CH3}->[CrO3] B}
\end{array}\]
Write the structure of the major product of the aldol condensation of benzaldehyde with acetone.
Write the structure of the major product of the aldol condensation of benzaldehyde with acetone.
Write the structure of the major product of the aldol condensation of benzaldehyde with acetone.
